weigh them but from the feel of lifting the stock ones out of my jeep this morning and then handling the fronts while doing the brakes today, I didn't notice a major difference. I did adjust the air psi this morning. They set em at 30 and I moved the fronts up to 38 and rears to 36. Felt a noticeable difference from yesterday, car is tighter and doesn't seem to be as mushy as yesterday. Thanks